why does my Toyota Highlander Third Generation (2014-2019) shake when I accelerate

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

489 words

Problem Statement

Learn how to diagnose and fix shaking during acceleration in Toyota Highlander (2014-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always wear safety gloves and glasses while working on the vehicle.
•Ensure the vehicle is securely lifted and supported before working underneath it to avoid accidents.

Symptoms

•Shaking or vibrating felt through the steering wheel and/or seat during acceleration
•Increased noise from the drivetrain (grinding or clunking sounds)
•Difficulty maintaining speed or acceleration
•Steering wheel misalignment or shaking when driving straight
•Uneven tire wear

Diagnostic Steps

1
Inspect and balance all four tires for proper inflation and wear.
2
Check for any visible damage or wear on suspension components (control arms, bushings, struts).
3
Test drive the vehicle to determine if the shaking occurs at specific speeds or conditions.
4
Use an OBD-II scanner to check for any stored error codes related to the engine or transmission.
5
Inspect the driveshaft and CV joints for any signs of damage or excessive play.
6
Examine engine and transmission mounts for wear or failure.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Tire pressure gauge
•Jack and jack stands
•Socket set
•Torque wrench
•Tire balancer

Parts Required

•Tires (if damaged)
•Suspension components (control arms, bushings)
•Driveshaft or CV joints (if damaged)
•Engine and transmission mounts (if required)

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Diagnostic Steps

1
Inspect and balance all four tires for proper inflation and wear.
2
Check for any visible damage or wear on suspension components (control arms, bushings, struts).
3
Test drive the vehicle to determine if the shaking occurs at specific speeds or conditions.
4
Use an OBD-II scanner to check for any stored error codes related to the engine or transmission.
5
Inspect the driveshaft and CV joints for any signs of damage or excessive play.
6
Examine engine and transmission mounts for wear or failure.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Wear safety gloves and glasses.

2. Tire Inspection and Balancing

Sub-steps:
1. Remove the wheel covers or hubcaps if applicable.
2. Check tire pressure using a tire gauge; inflate to manufacturer specifications if needed.
3. Inspect the tread for uneven wear; replace any damaged tires.
4. Balance the tires using a tire balancing machine.
5. Reinstall the wheel covers or hubcaps.

3. Suspension Component Replacement

Sub-steps:
1. Lift the vehicle using a jack and secure with jack stands.
2. Remove the wheel to access the suspension components.
3. Inspect control arms and bushings; replace any worn components with new parts.
4. Install new components and torque to manufacturer specifications.
5. Reinstall the wheel and lower the vehicle.

4. Driveshaft and CV Joint Inspection/Replacement

Sub-steps:
1. Inspect the driveshaft for any signs of damage or excessive play.
2. Check CV joints for torn boots or leaks; replace if necessary.
3. If replacing, remove the driveshaft and install a new one, torquing bolts to specifications.
4. Reassemble any components removed for access.

5. Engine and Transmission Mounts Check

Sub-steps:
1. Visually inspect engine and transmission mounts for cracks or excessive wear.
2. If mounts are damaged, support the engine with a jack and replace the mounts.
3. Torque new mount bolts to the specified values.

Tools Required:

Tire pressure gauge
Jack and jack stands
Socket set
Torque wrench
Tire balancer

Parts Required:

Tires (if damaged)
Suspension components (control arms, bushings)
Driveshaft or CV joints (if damaged)
Engine and transmission mounts (if required)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Always wear safety gloves and glasses while working on the vehicle.
Ensure the vehicle is securely lifted and supported before working underneath it to avoid accidents.